211133011213 has 4 divisors (see below), whose sum is σ = 215116652988. Its totient is φ = 207149369440.

The previous prime is 211133011211. The next prime is 211133011259. The reversal of 211133011213 is 312110331112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 137779788969 + 73353222244 = 371187^2 + 270838^2 .

It is a cyclic number.

It is not a de Polignac number, because 211133011213 - 2¹ = 211133011211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211133011211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1991820808 + ... + 1991820913.

It is an arithmetic number, because the mean of its divisors is an integer number (53779163247).

Almost surely, 2^211133011213 is an apocalyptic number.

It is an amenable number.

211133011213 is a deficient number, since it is larger than the sum of its proper divisors (3983641775).

211133011213 is an equidigital number, since it uses as much as digits as its factorization.

211133011213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3983641774.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 211133011213 its reverse (312110331112), we get a palindrome (523243342325).

The spelling of 211133011213 in words is "two hundred eleven billion, one hundred thirty-three million, eleven thousand, two hundred thirteen".